Organelles in cells were originally often independent cells, which were incorporated by host cells and lost their independence in the course of evolution. Biologists are now examining the way in which ...

Plant cells have several structures not found in other eukaryotes. In particular, organelles called chloroplasts ... of flattened disks in electron micrographs. The thylakoids contain the light ...

What do cells do when they are “hungry ... Novikoff was able to obtain the first electron micrographs of the new organelle from samples of partially purified lysosomes.